[Bug 2129972] Re: Ubuntu 25.10 can't boot with 6.17.0-6-generic kernel on encrypted fs

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: kdump-tools (Ubuntu)
Status: New => Confirmed

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https://bugs.launchpad.net/bugs/2129972

Title:
Ubuntu 25.10 can't boot with 6.17.0-6-generic kernel on encrypted fs

Status in kdump-tools package in Ubuntu:
Confirmed
Status in linux package in Ubuntu:
Confirmed

Bug description:
Hi guys.

Just got updated kernel 6.17.0-6 for 25.10, decided to reboot and
found out, that I can't boot anymore.

This laptop uses an ext4 on top of encrypted LVM setup (LUKS
encryption v2).

I'm able to provide encryption password, system continues to boot, but
it looks like that can't mount root partition, so I don't have logs,
just a screenshot of what kernel reports on screen that I've added to
attachment.

Previous kernel 6.17.0-5 boots without problems.

That's my /etc/fstab just in case it's needed:

# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/ubuntu-vg/ubuntu-lv during curtin installation
/dev/disk/by-id/dm-uuid-LVM-aoOM30ZlY6QyCItp6GcyhkVzOBoTPNfQX0UH24zvqx7or2HTnBZW2Y5PquPhVoXq / ext4 defaults 0 1

# /boot was on /dev/nvme0n1p2 during curtin installation
/dev/disk/by-uuid/5ee5a33e-ec14-4619-84a2-ae11385c546e /boot ext4 defaults 0 1

# /boot/efi was on /dev/nvme0n1p1 during curtin installation
/dev/disk/by-uuid/3B99-B952 /boot/efi vfat defaults 0 1

/swapfile none swap sw 0 0

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